Definition that contains eozoic
- paleozoic of or relating to or denoting the Paleozoic era
- trilobite an extinct arthropod that was abundant in Paleozoic times; had an exoskeleton divided into three parts
- ostracoderm extinct fish-like jawless vertebrate having a heavily armored body; of the Paleozoic
- cordaitaceae chiefly Paleozoic plants; Cordaites is the chief and typical genus
- cordaites tall Paleozoic trees superficially resembling modern screw pines; structurally intermediate in some ways between cycads and conifers
- edaphosaurus heavy-bodied reptile with a dorsal sail or crest; of the late Paleozoic
- eurypterida extinct aquatic arthropods of the Paleozoic
- family cordaitaceae chiefly Paleozoic plants; Cordaites is the chief and typical genus
- family psilophytaceae Paleozoic plants
- family rhyniaceae primitive plants of the Paleozoic